首页> 外文期刊>Journal of Applied Polymer Science >Simultaneous Determination of Hydroquinone and Catechol Using Poly(p-aminobenzoic acid) Modified Glassy Carbon Electrode
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Simultaneous Determination of Hydroquinone and Catechol Using Poly(p-aminobenzoic acid) Modified Glassy Carbon Electrode

机译:聚对氨基苯甲酸修饰的玻碳电极同时测定对苯二酚和邻苯二酚

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摘要

The electrochemical redox reaction of hydroquinone (HQ) and catechol (CC)was investigated with poly-(p-aminobenzoic acid) modified glassy-carbon electrode (poly-p-ABA/GCE) via cyclic voltammetry (CV) and differential Pulse voltammetry (DPV). The Poly-p-ABA/GCE has shown an excellent electrocatalytic activity for HQ and CC in 0.1 ml L-1 phosphate buffer solution (PBS). The oxidation and reduction separation (Delta E) has been decreased from 353 to 32 mV for HQ and from 228 to 33 mV vs. SCE for CC at the bare GCE and poly-p-ABA/GCE respectively. DPV curves show that the oxidation potential of HQ and CC has a separation about 105 mV at the poly-p-ABA/GCE. Moreover, the oxidation current of HQ and CC has been enhanced two and four times respectively at the modified electrode. Using DPV method, a highly selective and simultaneous determination of HQ and CC has been explored at the poly-p-ABA/GCE.
机译:通过循环伏安法(CV)和差示脉冲伏安法(PV)对聚(对氨基苯甲酸)修饰的玻碳电极(poly-p-ABA / GCE)研究了对苯二酚(HQ)和邻苯二酚(CC)的电化学氧化还原反应( DPV)。在0.1 ml L-1磷酸盐缓冲溶液(PBS)中,Poly-p-ABA / GCE对HQ和CC具有出色的电催化活性。相对于CC的SCE,裸露的GCE和poly-p-ABA / GCE的氧化和还原分离(Delta E)从HQ的353和32 mV分别降低到228和33 mV。 DPV曲线显示,在多聚p-ABA / GCE上,HQ和CC的氧化电位相距约105 mV。此外,在改性电极上,HQ和CC的氧化电流分别提高了两倍和四倍。使用DPV方法,在poly-p-ABA / GCE上探索了HQ和CC的高选择性同时测定方法。

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